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drm/msm: Add helper to check for per-process pgtables VM

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This will simplify a following commit to allow lazy VM creation to fail.

Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/743103/
Message-ID: <20260729155609.20190-9-robin.clark@oss.qualcomm.com>
This commit is contained in:
Rob Clark 2026-07-29 08:55:45 -07:00
parent b87c50d2ca
commit 517ca9a86a
1 changed files with 8 additions and 2 deletions
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10
drivers/gpu/drm/msm/adreno/adreno_gpu.c
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@ -356,6 +356,12 @@ int adreno_fault_handler(struct msm_gpu *gpu, unsigned long iova, int flags,
return 0;
}
static bool
valid_per_process_vm(struct msm_gpu *gpu, struct drm_gpuvm *vm)
{
return (vm != gpu->vm);
}
int adreno_get_param(struct msm_gpu *gpu, struct msm_context *ctx,
uint32_t param, uint64_t *value, uint32_t *len)
{
@ -414,12 +420,12 @@ int adreno_get_param(struct msm_gpu *gpu, struct msm_context *ctx,
*value = gpu->suspend_count;
return 0;
case MSM_PARAM_VA_START:
if (vm == gpu->vm)
if (!valid_per_process_vm(gpu, vm))
return UERR(EINVAL, drm, "requires per-process pgtables");
*value = vm->mm_start;
return 0;
case MSM_PARAM_VA_SIZE:
if (vm == gpu->vm)
if (!valid_per_process_vm(gpu, vm))
return UERR(EINVAL, drm, "requires per-process pgtables");
*value = vm->mm_range;
return 0;